UJI AKTIVITAS ANTIBAKTERI EKSTRAK ETANOL DAUN MELINJO (Gnetum gnemon L.) TERHADAP PERTUMBUHAN BAKTERI Staphylococcus aureus dan Streptococcus mutans TAHUN 2020
The Gnetum gnemon can be used as a medicine that has the function of anti-bacterial. The chemical content inside which is anti-bacterial is flavonoids and tannins. This study aims to find out the antibacterial from the ethanol extract of melinjo leaves can inhibit the growth of Staphylococcus aureus and Streptococcus mutans with a concentration of 300 mg/ml, 400 mg/ml, and 500 mg/ml. The test of anti-bacterial activity for the growth Staphylococcus aureus and Streptococcus mutans is done by using the disc diffusion method. The results showed that melinjo leaf contains an alkaloid, flavonoid, tannin, steroid and saponin compounds. The results of the simplicia powder characteristics obtained a total ash content of 7.495%, ash content insoluble in acid 0.785%, ethanol-soluble extract 4.324%, water-soluble extract 17.690%. The results of the antibacterial activity test of the ethanol extract of melinjo leaves obtained can inhibit the growth of Staphylococcus aureus and Streptococcus mutans namely at a concentration of 300 mg/ml, 400 mg/ml, and 500 mg/ml into the medium inhibition zone category. Ethanol extract of melinjo leaves has antibacterial activity against the growth of Staphylococcus aureus and Streptococcus mutans with an average diameter of inhibition zone of 9.7 mm (medium category) against Staphylococcus aureus and 6.7 mm (medium category) against bacteria Streptococcus mutans.